nanocore | fc8d2060f52b693d1745bac54a0943292519d643917590d4ded54a9cbd96ea7a

General

Target
d5d56d33b8698818602da14aa0754909.exe
Size 926KB
Sample210420-l7rt1evqd2
SHA256 fc8d2060f52b693d1745bac54a0943292519d643917590d4ded54a9cbd96ea7a
MD5 d5d56d33b8698818602da14aa0754909
SHA1 83711a00aa7b1cc874915d5e7221eff8ac008dcf
SHA512 a6820144a0b07370226f1d2f5a4f0478560a15482f6afe0920eb30a9826bb080b1c824dfdc60811f45afac2bcfbd61591c8f866d7caf67aeffc12124219a4829
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

cloudhost.myfirewall.org:5456

Mutex

526138e5-5494-46e7-98ba-5b4a5e1d307b

Attributes

activate_away_mode
true
backup_connection_host
cloudhost.myfirewall.org
backup_dns_server
cloudhost.myfirewall.org
buffer_size
65535
build_time
2021-01-30T00:19:04.422535736Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5456
default_group
saviour
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
526138e5-5494-46e7-98ba-5b4a5e1d307b
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
cloudhost.myfirewall.org
primary_dns_server
cloudhost.myfirewall.org
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ISS Manager = "C:\\Program Files (x86)\\ISS Manager\\issmgr.exe"	d5d56d33b8698818602da14aa0754909.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	d5d56d33b8698818602da14aa0754909.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3016 set thread context of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ISS Manager\issmgr.exe	d5d56d33b8698818602da14aa0754909.exe
File opened for modification	C:\Program Files (x86)\ISS Manager\issmgr.exe	d5d56d33b8698818602da14aa0754909.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3680	schtasks.exe
8	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3164	d5d56d33b8698818602da14aa0754909.exe
3164	d5d56d33b8698818602da14aa0754909.exe
3164	d5d56d33b8698818602da14aa0754909.exe
3164	d5d56d33b8698818602da14aa0754909.exe
3164	d5d56d33b8698818602da14aa0754909.exe
3164	d5d56d33b8698818602da14aa0754909.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3164	d5d56d33b8698818602da14aa0754909.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3164	d5d56d33b8698818602da14aa0754909.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79
PID 3016 wrote to memory of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79
PID 3016 wrote to memory of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79
PID 3016 wrote to memory of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79
PID 3016 wrote to memory of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79
PID 3016 wrote to memory of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79
PID 3016 wrote to memory of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79
PID 3016 wrote to memory of 3164	3016	d5d56d33b8698818602da14aa0754909.exe	79
PID 3164 wrote to memory of 3680	3164	d5d56d33b8698818602da14aa0754909.exe	80
PID 3164 wrote to memory of 3680	3164	d5d56d33b8698818602da14aa0754909.exe	80
PID 3164 wrote to memory of 3680	3164	d5d56d33b8698818602da14aa0754909.exe	80
PID 3164 wrote to memory of 8	3164	d5d56d33b8698818602da14aa0754909.exe	82
PID 3164 wrote to memory of 8	3164	d5d56d33b8698818602da14aa0754909.exe	82
PID 3164 wrote to memory of 8	3164	d5d56d33b8698818602da14aa0754909.exe	82

C:\Users\Admin\AppData\Local\Temp\d5d56d33b8698818602da14aa0754909.exe
"C:\Users\Admin\AppData\Local\Temp\d5d56d33b8698818602da14aa0754909.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\d5d56d33b8698818602da14aa0754909.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3164
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ISS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA742.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:3680
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "ISS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA7DF.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:8